Endeavour International 8-K Endeavour Announces First Quarter 2010 Financial and Operational Results

Exhibit 99.2

Appraised areas in red Cygnus Expansion: 2009 - 2010 2009 Cygnus Field Appraisal well 44/11a-4 drilled in Q1 Field boundary extended to the north and west Common field-wide gas water contact established 44/11a-4 is 54 feet high to prognosis High quality fluvial facies encountered in Leman sandstone Appraisal well 44/12a-5 in Panel 5c spud in April 2010 2010 Cygnus Field, post Panel 4 appraisal Source: Endeavour International